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<h2>Description</h2>
<p class="Body">Returns the value of the <i>Sinc</i> function constrained by a 
  window function. Descendant classes override the <strong>Window</strong> 
  method in order to implement a custom window function. </p>
<p class="Code">h(x) = <i>Sinc</i>(x) * <i>Window</i>(x);</p>
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Windowed <i>Sinc</i> filters are known for producing high quality resampled images. 
Ideal resampling corresponds to filtering an image with the ideal low-pass filter (i.e. 
a <i>Sinc</i> filter). This is computionally expensive, since the <i>Sinc</i> function
has infinite extent. Hence a window function is used to constrain the filter.
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<p class="Body">See topic about <a href="../../../../Additional%20Topics/Sampling%20and%20Rasterization.htm">Sampling and Rasterization</a> for further information. </p>
<p id="hidden">[See Also] <a href="../../../../Examples.htm#Resampler Example">Resampler 
  Example</a>, <a href="../../../../Examples.htm#Kernel%20Example">Kernel Example</a></p>
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